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Effect of nano-serpentine and nano-La2O3 on the frictional properties of PTFE composites in seawater environment

Yanhong Yan (College of Mechanical Engineering, Yanshan University, Qinhuangdao, China and Hebei Innovation Center for Equipment Lightweight Design and Manufacturing, Qinhuangdao, China)
Chengwen Yang (College of Mechanical Engineering, Yanshan University, Qinhuangdao, China and Hebei Innovation Center for Equipment Lightweight Design and Manufacturing, Qinhuangdao, China)
Wenbin Dong (College of Mechanical Engineering, Yanshan University, Qinhuangdao, China and Hebei Innovation Center for Equipment Lightweight Design and Manufacturing, Qinhuangdao, China)
Pengjuan Yan (College of Mechanical Engineering, Yanshan University, Qinhuangdao, China and Hebei Innovation Center for Equipment Lightweight Design and Manufacturing, Qinhuangdao, China)
Peilong Wang (College of Mechanical Engineering, Yanshan University, Qinhuangdao, China and Hebei Innovation Center for Equipment Lightweight Design and Manufacturing, Qinhuangdao, China)
Xiaocui Yan (College of Mechanical Engineering, Yanshan University, Qinhuangdao, China and Hebei Innovation Center for Equipment Lightweight Design and Manufacturing, Qinhuangdao, China)
Zhining Jia (Hebei Meter and Instrument Engineering Technology Research Center, Hebei Petroleum University of Technology, Chengde, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 28 March 2023

Issue publication date: 9 May 2023

74

Abstract

Purpose

This paper aims to investigate the tribological properties of polytetrafluoroethylene (PTFE) composites modified by nano-serpentine and nano-lanthanum oxide in a seawater environment.

Design/methodology/approach

In this paper, seven PTFE composites were prepared by unified design method and vacuum thermoforming method, and their hardness, water absorption and tribological properties were measured under seawater environment. The modification effects and thermal stability of the materials were analyzed by Fourier transform infrared spectroscopy, thermal gravimetry and differential scanning calorimetry. This paper analyzed the wear mechanism of PTFE composites by scanning electron microscopy and energy spectroscopy.

Findings

The results showed that the hardness of the PTFE composites were all improved, but the water absorption was increased with the increase of additives. The modification of nano-serpentine was successful and the thermal stability of PTFE composites was better. The lowest coefficient and minimum wear rate are 0.0267 and 8.67 × 10−5 · mm3 · (N · m)−1 respectively, which is 34.9% and 76% less than the pure PTFE.

Originality/value

The analysis showed that the wear mechanism of PTFE composites was abrasive wear and a small amount of adhesive wear, and when the additive content was appropriate, it easily formed a transfer film on the surface mating parts.

Keywords

Acknowledgements

Authors contribution: Yanhong Yan: investigation, conceptualization, methodology and formal analysis; Chengwen Yang: writing – original draft, review and editing; Wenbin Dong: supervision, project administration and resources; Pengjuan Yan: date curation and investigation; Xiaocui Yan: writing – original draft and formal analysis; Peilong Wang: methodology and software; and Zhining Jia: methodology, investigation, review and editing.

Citation

Yan, Y., Yang, C., Dong, W., Yan, P., Wang, P., Yan, X. and Jia, Z. (2023), "Effect of nano-serpentine and nano-La2O3 on the frictional properties of PTFE composites in seawater environment", Industrial Lubrication and Tribology, Vol. 75 No. 4, pp. 380-386. https://doi.org/10.1108/ILT-11-2022-0342

Publisher

:

Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

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